How to show Blender thumbnails in Linux (Ubuntu)
Save this file to: $HOME/.local/share/thumbnailers/blender.thumbnailer

[Thumbnailer Entry]
TryExec=blender-thumbnailer.py
Exec=blender-thumbnailer.py %u %o
MimeType=application/x-blender;




If you install Blender via Ubuntu's package manager, blender-thumbnailer.py will be in your PATH, otherwise you'll need to add it.

From what I can tell, you need to have blender-thumbnailer.py in your PATH for this to work.

See: How can I edit the $PATH on linux?



Note, it would be good to see if this could be simplified or even done automatically.